... primary heat transport system 一次热输送系统 primary heating system 一次加热系统 primary ion 初级离子 ...
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The results also make it clear that heating coefficient and primary energy efficiency of whole heating system should be adopted to evaluate the energy utilization of each heat pump system.
还表明应以整个供热系统的供热系数和一次能源利用系数来衡量各热泵系统的能量利用性。
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